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Multi-position adjustable height seat post

a seat post and multi-position technology, applied in the direction of rod connections, machine supports, cycle equipments, etc., can solve the problems of fast ageing of product appearance, difficult to achieve manufacturing progress, and wear of inner tubes

Active Publication Date: 2014-03-06
TIEN HSIN INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a multi-position adjustable height bicycle seat post locking assembly that overcomes the drawbacks of previous designs. The internal locking mechanism improves the appearance of the inner tube and provides a proper sealing surface for a wiper seal. The use of an air spring instead of a coil spring reduces weight and improves wear resistance. The manufacturer can machine the inner and outer pieces individually, making it easier to fabricate. The multi-position adjustable height seat post allows for proper adjustment and positioning of the seat post while riding.

Problems solved by technology

But this kind of seat post has some drawbacks below: First, after using certain period of time, the appearance of the inner tube will be wearing in virtue of the wear happened between the inner tube and the ball bearings when riders are adjusting the height of the seat post.
This will result in quick ageing of the product appearance.
Second, the progress of manufacture is difficult in virtue of the process of components.

Method used

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Examples

Experimental program
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Effect test

first embodiment

[0030]Referring to FIGS. 1-4, a multi-position adjustable height seat post in accordance with the present invention is usually mounted on the frame of a bike (not shown) and essentially to comprises an inner tube 1, an outer tube 2, a locking assembly 3, a triggering device 4, a first extending element 5, and a second extending element 6.

[0031]The inner tube 1 comprises an upper end 11 and a lower end 12. The outer tube 2, consisting of an inner sleeve 21 made of steel and an outer sleeve 22 made of aluminum, comprises an upper end 23 and a lower end 24. Preferably the hardness of the inner sleeve 21 is higher than 200 Vickers Pyramid Number. The outer tube 2 has a diameter greater than that of the inner tube 1, and the outer tube 2 is configured to allow at least a portion of the lower end 12 of the inner tube 1 to slide into the upper end 23 of the outer tube 2.

[0032]The outer tube 2 is configured at its lower end 24 to be received by a standard seat tube receptacle of a bicycle f...

second embodiment

[0052]Referring to FIG. 14, a multi-position adjustable height seat post comprises a triggering device 4 which is a push rod connected to the actuating unit 31.

third embodiment

[0053]Referring to FIG. 15, a multi-position adjustable height seat post comprises an outer tube 2, consisting of an outer sleeve 22 and four inner pieces 21 made of steel.

[0054]To sum up the above statements, the multi-position adjustable height seat post has several obvious advantages below:

[0055]First, the internal locking mechanism improves external appearance of the inner tube 1. It hides wear damage of the interface inside on the outer tube 2 for a like new external appearance in comparison with the U.S. Pat. No. 8,079,772 patent.

[0056]Second, the smooth circular inner tube 1 provides a proper to sealing surface for wiper seal preventing dirt, water, and other contaminants from entering inside mechanism.

[0057]Third, it allows for weight reduction in virtue of the replacing of coil spring with air spring (second extending element 6).

[0058]Fourth, the wear resistance is better in virtue of the steel material of the inner sleeve 22 of outer tube 2.

[0059]Fifth, its easier to fabri...

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PUM

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Abstract

A multi-position adjustable height seat post comprises an inner tube, an outer tube, a locking assembly, a triggering device, a first extending element, and a second extending element disposed between the tubes. The locking assembly comprises an actuating unit, a plurality of parallel grooves located in the outer tube, a plurality of spherical detent elements located, in the grooves, and a plurality of spherical elements located in the inner tube. The triggering device connects to the actuating unit. The first extending element constantly pushes the to actuating unit moving in a first direction. The second extending element disposes between the tubes. Once the triggering device is triggered, the actuating unit moves in a second direction contrary to the first direction and makes the spherical elements to move inward laterally to let the inner tube and outer tube move relative to each other freely.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a multi-position adjustable height seat post, specifically a tube within another tube that allows for the adjustment of seat height to multiple positions while riding a bicycle.[0003]2. Description of Related Art[0004]Cyclists, specifically those involved in mountain hiking, find that it is beneficial to have a variety of seat height options while riding a bicycle. Seat height options are desired because they afford the rider greater control of the bicycle over widely varying terrain.[0005]U.S. Pat. No. 8,079,772 patent had disclosed a multi-position bicycle seat post locking assembly. This invention provides for a multi-position adjustable height bicycle seat post locking assembly comprising an inner tube slidably supported within an outer tube. The outer tube has a smaller diameter so as to be received in the seat tube of a bicycle. The inner tube is adjustable, moving freely within the outer ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F16M11/00B62K19/36
CPCB62J1/06B62J2001/085F16B7/1409Y10T403/32467
Inventor WEHAGE, KRISTOPHERMILES, JASON
Owner TIEN HSIN INDS
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